I have a 250Ai and tried a few bullets 110NPT, 110 AB, 100BT 100g hornady and 100g sierra. I shot one bear and a bunch of deer with it. All the bullets kill deer just fine. but I mostly just shoot 100BT seconds. I havent caught a 100BT and they do enough damage but don't make a mess. Surprisingly the 100NPT seems the softest of the bunch. lots of damage (too much for my taste) and I caught two on broadside shots at deer. The shank in that one is very short and the front very soft.
No surprise. The front of a Partition is about as soft of lead as you will find.
It's all in the design.
